THE SOIL OF THE COTTON STATES. 6Y 
Silica 81.00 per cent. 
Alumina 6.80 " 
Lime.. 0.57 
Magnesia 1-60 " 
Potash 0.58 
Soda 1-29 » 
Peroxides of iron and manganese. . 4.18 " 
Phosphoric acid 0.38 " 
Sulphuric acid 0.07 " 
Chlorine 0.05 " 
Crenic, apocrenic, and humic acids. 0.30 " 
Insoluble vegetable matter 3.00 " 
99.82 " 
Loss 0.18 " 
100.00 
The subsoil of tlie above, obtained twenty inches below 
the surface, yielded — 
Silica 88.451 per cent. 
Alumina 4.100 « 
Lime 0.500 " 
Magnesia 1.800 " 
Potash 0.790 « 
Soda 1.450 « 
Peroxides of iron and manganese. 3.900 " 
Phosphoric acid 0.190 " 
Sulphuric acid 0.014 " 
Chlorine 0.005 " 
Crenic, apocrenic, and humic acids, 0.410 " 
Insoluble vegetable matter 3.000 " 
99.610 
Loss 0.390 
100.000 
